






🔧 Screw in Success: The Ultimate Woodworking Insert for Pros Who Demand Precision
This 50-piece set of 1/4-20 threaded inserts features 15mm deep zinc-plated carbon steel construction with a hex drive for easy installation. Designed for a wide range of wood types including hardwood and MDF, these inserts deliver commercial-grade strength and corrosion resistance, making them the go-to choice for professional furniture assembly and woodworking projects.


| Material | Carbon Steel |
| Fastener Type | Hex |
| Thread Size | 1/4"-20 |
| Exterior Finish | Zinc plated carbon steel |
| Color | White |
| Metal Type | Carbon Steel |
| Finish Type | Zinc plated carbon steel |
| Drive System | External Hex |
| Brand | Sprite Science |
| Thread Type | 1/4-20 |
| Inside Thread Size | 10.4MM |
| Grade Rating | commercial |
| Thread Style | Threaded |
| Thread Coverage | 15mm |
| Thread Class | UNC |
| Size | 1/4-20 x 15mm |
| Head Style | Flat |
| Item Diameter | 11.7 Millimeters |
| Compatible groove diameter | 0.46 Inches |
| Maximum Shear Strength | 300-500 MPa |
| Number of Pieces | 50 |
| Manufacturer | Sprite Science |
| Part Number | 50x1/4-20WOODINSERT |
| Item Weight | 8.2 ounces |
| Item model number | 50x1/4-20WOODINSERT |
| Finish | Zinc plated carbon steel |
| Installation Method | Screw-In |
| Cutting Diameter | 11.7 Millimeters |
| Usage | Wood, Furniture |
| Batteries Included? | No |
| Batteries Required? | No |
T**H
Easy, solid, countersunk.
Of all the inserts I’ve used so far, I like these the best. Seemingly solid build, easy to install. Per the instructions I pre-drilled with 3/8” for hardwood, used a countersink for the little flange at top, and installed with the pictured bolt/nut combo tool on an impact driver and a small amount of super glue. No breaks, no fuss, giddy up!
M**E
Exactly What I Needed
I purchased these for a project we are working on and they work perfectly. The quantity for the price is fantastic! They also included the hex wrench and detailed instructions on hole side and dimensions. I highly recommend these!
M**E
Great price
Worked perfect for my project. Inserted into 3/4 inch osb and very strong with no tear out
T**N
Use them all he time!
Do not work well in soft woods, as they have a tendency to pull out!
F**T
Easy install and secure fit
Built a custom table and needed to attach the top to the metal stand but wanted it to be easily removable. These mounts worked great. Plan on using them for all my projects when applicable.
A**H
Good quality
Good quality for the price!
L**R
They worked
They worked very well. I needed an insert that would add versatility to one of my projects, they were the right choice.
M**N
Fit well and easy to install
These inserts install easily and are sturdy. Not as tough as some of the more expensive ones on the market but still plenty strong for diy and residential furniture etc. Great value for the money. Just make sure to use the correct size drill bit and a dab of glue or epoxy to lock them into the wood.
TrustPilot
vor 5 Tagen
vor 2 Wochen